20802159

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5413}}^1$

素因数の和:5487

約数の個数: 24

約数和(自身を含む): 34909472

約数和(自身を除く): 14107313

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5413, 16239, 37891, 48717, 113673, 330193, 341019, 990579, 2311351, 2971737, 6934053, 20802159]

約数ペア:

[(1, 20802159), (3, 6934053), (7, 2971737), (9, 2311351), (21, 990579), (61, 341019), (63, 330193), (183, 113673), (427, 48717), (549, 37891), (1281, 16239), (3843, 5413)]